This preview shows page 1. Sign up to view the full content.
Number
A unit of an
abstract mathematical
system subject to the
laws of arithmetic
Natural number
The
number 0 and any
number obtained by
repeatedly adding 1 to it
Negative number
A
value less than 0, with a
sign opposite to its posi
tive counterpart
Integer
A natural
number, a negative of a
natural number, or zero
Rational number
An
integer or the quotient of
two integers (division by
zero excluded)
34
Chapter 2
Binary Values and Number Systems
Goals
After studying this chapter, you should be able to:
±
distinguish among categories of numbers.
±
describe positional notation.
±
convert numbers in other bases to base ten.
±
convert baseten numbers to numbers in other bases.
±
describe the relationship between bases 2, 8, and 16.
±
explain the importance to computing of bases that are powers of 2.
2.1
Number Categories
Numbers come in all sorts of categories. There are natural numbers, nega
tive numbers, rational numbers, irrational numbers, and many others that
are important in mathematics but not to the understanding of computing.
Let’s review the relevant category definitions briefly.
This is the end of the preview. Sign up
to
access the rest of the document.
This note was uploaded on 01/13/2011 for the course CSE 1550 taught by Professor Marianakant during the Fall '10 term at York University.
 Fall '10
 MARIANAKANT

Click to edit the document details